Calking compound



Patented June 1, 1926.

TENT OFFICE.

JAMES S. MCGILL, OF AVALON, PENNSYLVANIA.

CALKING COMPOUND.

No Drawing.

My invention relates to improvements in calking compounds, used for filling crevices as, for example, between unlike materials, wood, stone, plaster, etc.-and for other such purposes. The object of my invention is a material of this sort which, easily handled by proper appliances and possessing all the desirable qualities of such materials, has this further advantage, that it is permanently elastic, and therefore durable and effective through long intervals of time, as other such materials are not.

A typical compound embodying my invention may be prepared on the following formula: whiting, 835 pounds; linseed oil, 11 gallons; asbestos, crushed, 25 pounds; beef tallow, 1 gallon. To these ingredients coloring matter may be added, and, by way of example, and to afford a gray color, I add lamp black in oil, 9 ounces.

These ingredients may be mixed in an ordinary pug mill, and ordinarily I proceed in this manner: I pour into the mill the predetermined quantity of linseed oil and then start the mill. While the mill continues in operation I add, gradually, first the whiting, and, after it has been worked into the oil, the tallow, previously warmed to liquefaction. Then I add the asbestos. It is the asbestos ingredient which conveniently I add until the mass comes to the desired degree of plasticity. The coloring matter is added last. I grind to smoothness and bring the whole to a condition in which it may be applied by a gun, and this, of course, is a condition of fluidity under slight pressure.

The substance will ordinarily be applied by a gun. It tools perfectly; that is to say, it will not stick to and follow the putty knife or other tool by which it is spread and surfaced. It does not stain the surface of the body to which it may be ap- Applieation filed July 9, 1925. Serial No. 42,578.

plied. Following upon application and exposure to the air, the mass hardens somewhat, and a skin forms upon its surface, but the body beneath remains permanently elastic: it does not harden, crumble, and break away, and it resists the effects of expansion, contraction, and vibration. It withstands heat, without running; and cold, without cracking. It is permanently adherent to surfaces of wood, paint, brick, stone, stucco, terra cotta, and metal, to which it may be applied. It takes paint, and paint applied to it will retain its color.

The proportions given are exemplary. In the case given the ratio of tallow to mineral matter should be approximately that indicated. Linseed oil is added inquantity to bring the mass to the desired condition of plasticity.

The essential feature of this composition is a normally solid animal fat, united with and intimately mingled with the inert and finely divided material which forms the body. Beef tallow is the most readily avai1- able normally solid animal fat, and it serves my purpose well. Asbestos fiber is combined with the whiting, to serve its well known office of making a stronger mass. Linseed oil is serviceable, in that it increases fluidity, and renders the compound easier of application. The coloring matter may be such as preferred, and a wide range of inert mineral pigments are known to the industry.

I claim as my invention A calking compound composed of the following ingredients, combined in the ratio indicated by the figures given: whiting, 335 pounds; linseed oil, 11 gallons; asbestos, 25 pounds; tallow, 1 gallon.

In testimony whereof I have hereunto set my hand.

JAMES s. MoGILL. 

